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168 lines
11 KiB
Python
168 lines
11 KiB
Python
#! /usr/bin/env python
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# NBT-NS/LLMNR Responder
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# Created by Laurent Gaffie
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# Copyright (C) 2014 Trustwave Holdings, Inc.
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import struct
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from odict import OrderedDict
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class Packet():
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fields = OrderedDict([
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("data", ""),
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])
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def __init__(self, **kw):
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self.fields = OrderedDict(self.__class__.fields)
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for k,v in kw.items():
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if callable(v):
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self.fields[k] = v(self.fields[k])
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else:
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self.fields[k] = v
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def __str__(self):
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return "".join(map(str, self.fields.values()))
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#MS-SQL Pre-login packet class
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class MSSQLPreLoginAnswer(Packet):
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fields = OrderedDict([
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("PacketType", "\x04"),
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("Status", "\x01"),
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("Len", "\x00\x25"),
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("SPID", "\x00\x00"),
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("PacketID", "\x01"),
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("Window", "\x00"),
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("TokenType", "\x00"),
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("VersionOffset", "\x00\x15"),
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("VersionLen", "\x00\x06"),
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("TokenType1", "\x01"),
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("EncryptionOffset", "\x00\x1b"),
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("EncryptionLen", "\x00\x01"),
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("TokenType2", "\x02"),
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("InstOptOffset", "\x00\x1c"),
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("InstOptLen", "\x00\x01"),
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("TokenTypeThrdID", "\x03"),
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("ThrdIDOffset", "\x00\x1d"),
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("ThrdIDLen", "\x00\x00"),
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("ThrdIDTerminator", "\xff"),
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("VersionStr", "\x09\x00\x0f\xc3"),
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("SubBuild", "\x00\x00"),
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("EncryptionStr", "\x02"),
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("InstOptStr", "\x00"),
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])
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def calculate(self):
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CalculateCompletePacket = str(self.fields["PacketType"])+str(self.fields["Status"])+str(self.fields["Len"])+str(self.fields["SPID"])+str(self.fields["PacketID"])+str(self.fields["Window"])+str(self.fields["TokenType"])+str(self.fields["VersionOffset"])+str(self.fields["VersionLen"])+str(self.fields["TokenType1"])+str(self.fields["EncryptionOffset"])+str(self.fields["EncryptionLen"])+str(self.fields["TokenType2"])+str(self.fields["InstOptOffset"])+str(self.fields["InstOptLen"])+str(self.fields["TokenTypeThrdID"])+str(self.fields["ThrdIDOffset"])+str(self.fields["ThrdIDLen"])+str(self.fields["ThrdIDTerminator"])+str(self.fields["VersionStr"])+str(self.fields["SubBuild"])+str(self.fields["EncryptionStr"])+str(self.fields["InstOptStr"])
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VersionOffset = str(self.fields["TokenType"])+str(self.fields["VersionOffset"])+str(self.fields["VersionLen"])+str(self.fields["TokenType1"])+str(self.fields["EncryptionOffset"])+str(self.fields["EncryptionLen"])+str(self.fields["TokenType2"])+str(self.fields["InstOptOffset"])+str(self.fields["InstOptLen"])+str(self.fields["TokenTypeThrdID"])+str(self.fields["ThrdIDOffset"])+str(self.fields["ThrdIDLen"])+str(self.fields["ThrdIDTerminator"])
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EncryptionOffset = VersionOffset+str(self.fields["VersionStr"])+str(self.fields["SubBuild"])
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InstOpOffset = EncryptionOffset+str(self.fields["EncryptionStr"])
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ThrdIDOffset = InstOpOffset+str(self.fields["InstOptStr"])
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self.fields["Len"] = struct.pack(">h",len(CalculateCompletePacket))
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#Version
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self.fields["VersionLen"] = struct.pack(">h",len(self.fields["VersionStr"]+self.fields["SubBuild"]))
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self.fields["VersionOffset"] = struct.pack(">h",len(VersionOffset))
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#Encryption
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self.fields["EncryptionLen"] = struct.pack(">h",len(self.fields["EncryptionStr"]))
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self.fields["EncryptionOffset"] = struct.pack(">h",len(EncryptionOffset))
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#InstOpt
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self.fields["InstOptLen"] = struct.pack(">h",len(self.fields["InstOptStr"]))
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self.fields["EncryptionOffset"] = struct.pack(">h",len(InstOpOffset))
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#ThrdIDOffset
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self.fields["ThrdIDOffset"] = struct.pack(">h",len(ThrdIDOffset))
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#MS-SQL NTLM Negotiate packet class
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class MSSQLNTLMChallengeAnswer(Packet):
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fields = OrderedDict([
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("PacketType", "\x04"),
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("Status", "\x01"),
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("Len", "\x00\xc7"),
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("SPID", "\x00\x00"),
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("PacketID", "\x01"),
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("Window", "\x00"),
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("TokenType", "\xed"),
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("SSPIBuffLen", "\xbc\x00"),
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("Signature", "NTLMSSP"),
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("SignatureNull", "\x00"),
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("MessageType", "\x02\x00\x00\x00"),
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("TargetNameLen", "\x06\x00"),
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("TargetNameMaxLen", "\x06\x00"),
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("TargetNameOffset", "\x38\x00\x00\x00"),
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("NegoFlags", "\x05\x02\x89\xa2"),
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("ServerChallenge", ""),
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("Reserved", "\x00\x00\x00\x00\x00\x00\x00\x00"),
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("TargetInfoLen", "\x7e\x00"),
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("TargetInfoMaxLen", "\x7e\x00"),
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("TargetInfoOffset", "\x3e\x00\x00\x00"),
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("NTLMOsVersion", "\x05\x02\xce\x0e\x00\x00\x00\x0f"),
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("TargetNameStr", "SMB"),
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("Av1", "\x02\x00"),#nbt name
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("Av1Len", "\x06\x00"),
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("Av1Str", "SMB"),
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("Av2", "\x01\x00"),#Server name
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("Av2Len", "\x14\x00"),
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("Av2Str", "SMB-TOOLKIT"),
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("Av3", "\x04\x00"),#Full Domain name
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("Av3Len", "\x12\x00"),
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("Av3Str", "smb.local"),
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("Av4", "\x03\x00"),#Full machine domain name
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("Av4Len", "\x28\x00"),
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("Av4Str", "server2003.smb.local"),
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("Av5", "\x05\x00"),#Domain Forest Name
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("Av5Len", "\x12\x00"),
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("Av5Str", "smb.local"),
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("Av6", "\x00\x00"),#AvPairs Terminator
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("Av6Len", "\x00\x00"),
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])
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def calculate(self):
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##First convert to uni
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self.fields["TargetNameStr"] = self.fields["TargetNameStr"].encode('utf-16le')
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self.fields["Av1Str"] = self.fields["Av1Str"].encode('utf-16le')
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self.fields["Av2Str"] = self.fields["Av2Str"].encode('utf-16le')
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self.fields["Av3Str"] = self.fields["Av3Str"].encode('utf-16le')
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self.fields["Av4Str"] = self.fields["Av4Str"].encode('utf-16le')
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self.fields["Av5Str"] = self.fields["Av5Str"].encode('utf-16le')
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##Then calculate
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CalculateCompletePacket = str(self.fields["PacketType"])+str(self.fields["Status"])+str(self.fields["Len"])+str(self.fields["SPID"])+str(self.fields["PacketID"])+str(self.fields["Window"])+str(self.fields["TokenType"])+str(self.fields["SSPIBuffLen"])+str(self.fields["Signature"])+str(self.fields["SignatureNull"])+str(self.fields["MessageType"])+str(self.fields["TargetNameLen"])+str(self.fields["TargetNameMaxLen"])+str(self.fields["TargetNameOffset"])+str(self.fields["NegoFlags"])+str(self.fields["ServerChallenge"])+str(self.fields["Reserved"])+str(self.fields["TargetInfoLen"])+str(self.fields["TargetInfoMaxLen"])+str(self.fields["TargetInfoOffset"])+str(self.fields["NTLMOsVersion"])+str(self.fields["TargetNameStr"])+str(self.fields["Av1"])+str(self.fields["Av1Len"])+str(self.fields["Av1Str"])+str(self.fields["Av2"])+str(self.fields["Av2Len"])+str(self.fields["Av2Str"])+str(self.fields["Av3"])+str(self.fields["Av3Len"])+str(self.fields["Av3Str"])+str(self.fields["Av4"])+str(self.fields["Av4Len"])+str(self.fields["Av4Str"])+str(self.fields["Av5"])+str(self.fields["Av5Len"])+str(self.fields["Av5Str"])+str(self.fields["Av6"])+str(self.fields["Av6Len"])
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CalculateSSPI = str(self.fields["Signature"])+str(self.fields["SignatureNull"])+str(self.fields["MessageType"])+str(self.fields["TargetNameLen"])+str(self.fields["TargetNameMaxLen"])+str(self.fields["TargetNameOffset"])+str(self.fields["NegoFlags"])+str(self.fields["ServerChallenge"])+str(self.fields["Reserved"])+str(self.fields["TargetInfoLen"])+str(self.fields["TargetInfoMaxLen"])+str(self.fields["TargetInfoOffset"])+str(self.fields["NTLMOsVersion"])+str(self.fields["TargetNameStr"])+str(self.fields["Av1"])+str(self.fields["Av1Len"])+str(self.fields["Av1Str"])+str(self.fields["Av2"])+str(self.fields["Av2Len"])+str(self.fields["Av2Str"])+str(self.fields["Av3"])+str(self.fields["Av3Len"])+str(self.fields["Av3Str"])+str(self.fields["Av4"])+str(self.fields["Av4Len"])+str(self.fields["Av4Str"])+str(self.fields["Av5"])+str(self.fields["Av5Len"])+str(self.fields["Av5Str"])+str(self.fields["Av6"])+str(self.fields["Av6Len"])
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CalculateNameOffset = str(self.fields["Signature"])+str(self.fields["SignatureNull"])+str(self.fields["MessageType"])+str(self.fields["TargetNameLen"])+str(self.fields["TargetNameMaxLen"])+str(self.fields["TargetNameOffset"])+str(self.fields["NegoFlags"])+str(self.fields["ServerChallenge"])+str(self.fields["Reserved"])+str(self.fields["TargetInfoLen"])+str(self.fields["TargetInfoMaxLen"])+str(self.fields["TargetInfoOffset"])+str(self.fields["NTLMOsVersion"])
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CalculateAvPairsOffset = CalculateNameOffset+str(self.fields["TargetNameStr"])
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CalculateAvPairsLen = str(self.fields["Av1"])+str(self.fields["Av1Len"])+str(self.fields["Av1Str"])+str(self.fields["Av2"])+str(self.fields["Av2Len"])+str(self.fields["Av2Str"])+str(self.fields["Av3"])+str(self.fields["Av3Len"])+str(self.fields["Av3Str"])+str(self.fields["Av4"])+str(self.fields["Av4Len"])+str(self.fields["Av4Str"])+str(self.fields["Av5"])+str(self.fields["Av5Len"])+str(self.fields["Av5Str"])+str(self.fields["Av6"])+str(self.fields["Av6Len"])
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self.fields["Len"] = struct.pack(">h",len(CalculateCompletePacket))
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self.fields["SSPIBuffLen"] = struct.pack("<i",len(CalculateSSPI))[:2]
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# Target Name Offsets
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self.fields["TargetNameOffset"] = struct.pack("<i", len(CalculateNameOffset))
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self.fields["TargetNameLen"] = struct.pack("<i", len(self.fields["TargetNameStr"]))[:2]
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self.fields["TargetNameMaxLen"] = struct.pack("<i", len(self.fields["TargetNameStr"]))[:2]
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#AvPairs Offsets
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self.fields["TargetInfoOffset"] = struct.pack("<i", len(CalculateAvPairsOffset))
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self.fields["TargetInfoLen"] = struct.pack("<i", len(CalculateAvPairsLen))[:2]
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self.fields["TargetInfoMaxLen"] = struct.pack("<i", len(CalculateAvPairsLen))[:2]
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#AvPairs StrLen
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self.fields["Av1Len"] = struct.pack("<i", len(str(self.fields["Av1Str"])))[:2]
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self.fields["Av2Len"] = struct.pack("<i", len(str(self.fields["Av2Str"])))[:2]
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self.fields["Av3Len"] = struct.pack("<i", len(str(self.fields["Av3Str"])))[:2]
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self.fields["Av4Len"] = struct.pack("<i", len(str(self.fields["Av4Str"])))[:2]
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self.fields["Av5Len"] = struct.pack("<i", len(str(self.fields["Av5Str"])))[:2]
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#AvPairs 6 len is always 00.
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